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Understanding TransPort Network Services

As of the time of this writing, under TransPort firmware v5.2.14.5, the Network Services listed below are available on TransPort WR models.

From the TransPort's web interface, navigate to Configuration - Network > Network Services.

The purpose of this KB is to clarify what these services are for, what port numbers they use, if they can be changed (if so, how), and to include any useful, related information.

Device Discovery (ADDP) - ADDP is a proprietary Digi protocol used for discovering TransPorts (among other Digi devices) over IP networks to view and change IP settings, commonly with the Digi Device Discovery Utility for Windows..  If a password is input here, a password request prompt will appear in the Digi Device Discovery Utility, or similar applications that use ADDP.  Users should consider disabling ADDP for security purposes.  Uses port 2632 UDP, which cannot be changed.

NOTE:  Beginning with TransPort firmware v5.2.14.5, ADDP is disabled by default, whereas it was enabled by default in previous firmwares.

Enable Realport - Enable if using the Digi serial-over-IP "RealPort" driver to interface with a serially-attached device, for example via a Windows COM port number.  Port 771 TCP is the default port and may be changed here if needed.  If the port number is changed, ensure that the same port number is used on the computer running the RealPort driver.

Enable Encrypted Realport - Enable if using optional encryption for the RealPort driver.  Port 1027 TCP is the default and may be changed here if needed.  If the port number is changed, ensure that the same port number is used on the computer running the RealPort driver.

Enable Network Management Protocol (SNMP) - Enable the controls just below for the Simple Network Management Protocol.  Port 161 UDP is the default and may be changed here if needed.

NOTE:  UDP port 162 is used for receiving SNMP traps from devices.

Enable SNMP v1 - Original SNMP standard that does not provide any encryption of data.  Authentication is done with a “Community string” (password), that is transmitted in cleartext.

Enable SNMP v2c - 2nd generation SNMP standard that adds the “GetBulkRequest” feature, which allows the SNMP program to ask for a larger amount of data (compared to a “GetNext” request that only provides the next value).  Still only uses the “Community string” as the authentication method.

Enable SNMP v3 - Current and most secure version of SNMP with added optional authentication (MD5 or SHA1) and encryption (DES or AES) support.  Requires the user of a username that correlates with the authentication and encryption passwords.

Enable Simple Network Time Server (SNTP) - Sources are RTC (Real Time Clock), GPS (Global Positioning System), NTP (Network Time Protocol) Client.  Listens on port 123 UDP.

Enable Secure Shell Server (SSH / SFTP) - Enables the use of one or more TransPort's SSH servers.  Port 22 is the default and may be changed in Configuration - Network > SSH Server > SSH Server n where n is the SSH Server instance (0 being the first, and so on).

Enable FTP Server - Enables the TransPort's FTP server, which listens on port 21 by default.  While the port number cannot technically be changed, it can be re-directed from a different external port of your choice to port 21 internally via a port re-direction rule in the TransPort firewall.

Enable HTTP Server - Enables the TransPort's web server, which listens on ports 80 and 8080 by default.  While the port number cannot technically be changed, it can be re-directed from a different external port of your choice to port 80 or 8080 internally via a port re-direction rule in the TransPort firewall.

Enable HTTPS Server - Enables the TransPort's encrypted web server, which listens on port 443 by default.  This HTTPS port number may be changed in a separate area of the TransPort's web interface, in Configuration - Network > Advanced Network Settings, in the Socket Settings section.

Enable Telnet Server - Enables the TransPort's Telnet server, which listens on port 23 by default.  While the port number cannot technically be changed, it can be re-directed from a different external port of your choice to port 23 internally via a port re-direction rule in the TransPort firewall.

Enable Telnet over SSL Server - Enables "secure telnet", which listens on port 992 by default.  While the port number cannot technically be changed, it can be re-directed from a different external port of your choice to port 992 internally via a port re-direction rule in the TransPort firewall.

Enable ASY Port Server - Enable the "ASY x Listening Port" controls further below.  Required to interface with attached serial devices via TCP socket connections.

Enable ZING - Enable to use the Digi FlashWriter utility.  Digi Technical Support recommends keeping this setting enabled to allow potential future FlashWriter recovery of problematic units.

Enable RCI over HTTP - Enable to use the Remote Command Interface to exchange data between a client and the TransPort.

ASY x Listening Port - Port numbers to interface with TransPort serial ports via TCP or UDP socket connections.  ASY 0 represents the first physical serial port, and so on.

Screenshot of factory default settings:

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Last updated: Aug 23, 2017

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Cellular/Transport

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